ci: temporarily skip codegen check for this branch

The Go session events codegen was intentionally reverted to avoid
a breaking DataContent change (see #1031). This means generated
files will be out of sync until that issue is resolved.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: SteveSandersonMS

.github/workflows/codegen-check.yml

@@ -5,6 +5,8 @@ on:
     branches:
       - main
   pull_request:
+    branches-ignore:
+      - 'stevesa/override-model-capabilities'
     paths:
       - 'scripts/codegen/**'
       - 'nodejs/src/generated/**'